Here is an updated hype list. I've removed item#18 as it is too unrealistic (after the last thread on parity clause I think MS is unfortunately completely oblivious to what makes the clause bad). And I added items 24 and 25.
Here is what I'm hoping for from gamescom:
1) Extended Quantum Break demo. Finally provide a solid release date.
2) Extended Scalebound demo - we finally find out what genre the game will fall under
3) Extended Crackdown demo. Confirm that the game is not online only.
4) Halo 5 delayed one month to add splitscreen co-op in campaign and multiplayer
5) Splosion Man 2 announced from Twisted Pixel
6) Rise Of The Tomb Raider confirmed to have zero multiplayer achievements
7) Marvel, Capcom, and Microsoft announce unprecedented partnership to revive Marvel vs Capcom 4. Cross-platform multiplayer between Steam and XB1.
8) Gabe Newell and Phil Spencer come out on stage and confirm another unprecedented partnership to revive Half Life 3, Portal 3, and Left 4 Dead 3.
9) Rare reveals that Sea Of Thieves is not a free-to-play MMO. Confirms without a doubt that it is a shared world game that can be played with co-op but its story can also be enjoyed alone.
10) One last patch to finally fix all of MCC's issues
11) Alan Wake 2 announced
12) Alan Wake 1 remastered including all DLC and American Nightmare
13) D4 Season 2 announced
14) Rare announces Conker's Bad Fur Day 2 and Banjo Kazooie 3 are in early concept stages
15) Microsoft announces that they found a new developer for Phantom Dust and have revived the "not cancelled but not in active development" game
16) Microsoft announces XB1 will start to get more Japanese games. We will stop missing out on games like Guilty Gear, Persona 5, Tales of Xilia, etc...
17) Microsoft announces it has completely patched up relations and un-burned all bridges with Super Giant Games and Team Meat. Super Meat Boy, Bastion, Binding Of Isaac, and Transistor all announced for XB1
18) MS completely abolishes parity clause and issues public apology to indie devs
19) Phil Fish and Phil Spencer come on stage to announce revival of Fez 2
20) All issues with 360 BC revealed to be fixed (multi-disc games confirmed to work, performance issues resolved, confirm all publishers are on-board)
21) Sunset Overdrive 2 and Titanfall 2 announced
22) Sequels to Lost Odyssey and Blue Dragon announced
23) The Witness port announced for XB1
24) Right before the curtains close, Spencer says "and there's one more thing to show you". Hideo Kojima and Guillermo Del Toro come on stage to announce the revival of Silent Hills
25) Playable Teaser port downloadable from the XB1 storefront as soon as the conference is over.